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<a name="gst-plugins-bad-plugins-proxysrc"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-proxysrc.top_of_page"></a>proxysrc</span></h2>
<p>proxysrc</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-proxysrc.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody><tr>
<td class="property_type">
<a class="link" href="gst-plugins-bad-plugins-proxysink.html#GstProxySink"><span class="type">GstProxySink</span></a> *</td>
<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-proxysrc.html#GstProxySrc--proxysink" title="The “proxysink” property">proxysink</a></td>
<td class="property_flags">Read / Write</td>
</tr></tbody>
</table></div>
</div>
<a name="GstProxySrc"></a><div class="refsect1">
<a name="gst-plugins-bad-plugins-proxysrc.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-bad-plugins-proxysrc.html#GstProxySrc-struct" title="struct GstProxySrc">GstProxySrc</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-proxysrc.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
                <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBin.html#GstBin-struct">GstBin</a>
                    <span class="lineart">╰──</span> GstProxySrc
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-proxysrc.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GstProxySrc implements
 <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstChildProxy.html#GstChildProxy-struct">GstChildProxy</a>.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-proxysrc.description"></a><h2>Description</h2>
<p>Proxysrc is a source element that proxies events, queries, and buffers from
another pipeline that contains a matching proxysink element. The purpose is
to allow two decoupled pipelines to function as though they are one without
having to manually shuttle buffers, events, queries, etc between the two.</p>
<p>The element queues buffers from the matching proxysink to an internal queue,
so everything downstream is properly decoupled from the upstream pipeline.
However, the queue may get filled up if the downstream pipeline does not
accept buffers quickly enough; perhaps because it is not yet PLAYING.</p>
<div class="refsect3">
<a name="id-1.2.173.8.4"></a><h4>Usage</h4>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
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        <td class="listing_code"><pre class="programlisting">GstElement <span class="gtkdoc opt">*</span>pipe1<span class="gtkdoc opt">, *</span>pipe2<span class="gtkdoc opt">, *</span>psink<span class="gtkdoc opt">, *</span>psrc<span class="gtkdoc opt">;</span>
GstClock <span class="gtkdoc opt">*</span>clock<span class="gtkdoc opt">;</span>

pipe1 <span class="gtkdoc opt">=</span> <span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstParse.html#gst-parse-launch">gst_parse_launch</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;audiotestsrc ! proxysink name=psink&quot;</span><span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">);</span>
psink <span class="gtkdoc opt">=</span> <span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBin.html#gst-bin-get-by-name">gst_bin_get_by_name</a></span> <span class="gtkdoc opt">(</span><span class="function">GST_BIN</span> <span class="gtkdoc opt">(</span>pipe1<span class="gtkdoc opt">),</span> <span class="string">&quot;psink&quot;</span><span class="gtkdoc opt">);</span>

pipe2 <span class="gtkdoc opt">=</span> <span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstParse.html#gst-parse-launch">gst_parse_launch</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;proxysrc name=psrc ! autoaudiosink&quot;</span><span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">);</span>
psrc <span class="gtkdoc opt">=</span> <span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBin.html#gst-bin-get-by-name">gst_bin_get_by_name</a></span> <span class="gtkdoc opt">(</span><span class="function">GST_BIN</span> <span class="gtkdoc opt">(</span>pipe2<span class="gtkdoc opt">),</span> <span class="string">&quot;psrc&quot;</span><span class="gtkdoc opt">);</span>

<span class="gtkdoc slc">// Connect the two pipelines</span>
<span class="function"><a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-set">g_object_set</a></span> <span class="gtkdoc opt">(</span>psrc<span class="gtkdoc opt">,</span> <span class="string">&quot;proxysink&quot;</span><span class="gtkdoc opt">,</span> psink<span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">);</span>

<span class="gtkdoc slc">// Both pipelines must agree on the timing information or we&apos;ll get glitches</span>
<span class="gtkdoc slc">// or overruns/underruns. Ideally, we should tell pipe1 to use the same clock</span>
<span class="gtkdoc slc">// as pipe2, but since that will be set asynchronously to the audio clock, it</span>
<span class="gtkdoc slc">// is simpler and likely accurate enough to use the system clock for both</span>
<span class="gtkdoc slc">// pipelines. If no element in either pipeline will provide a clock, this</span>
<span class="gtkdoc slc">// is not needed.</span>
clock <span class="gtkdoc opt">=</span> <span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstSystemClock.html#gst-system-clock-obtain">gst_system_clock_obtain</a></span> <span class="gtkdoc opt">();</span>
<span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPipeline.html#gst-pipeline-use-clock">gst_pipeline_use_clock</a></span> <span class="gtkdoc opt">(</span><span class="function">GST_PIPELINE</span> <span class="gtkdoc opt">(</span>pipe1<span class="gtkdoc opt">),</span> clock<span class="gtkdoc opt">);</span>
<span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPipeline.html#gst-pipeline-use-clock">gst_pipeline_use_clock</a></span> <span class="gtkdoc opt">(</span><span class="function">GST_PIPELINE</span> <span class="gtkdoc opt">(</span>pipe2<span class="gtkdoc opt">),</span> clock<span class="gtkdoc opt">);</span>
<span class="function"><a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref">g_object_unref</a></span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">);</span>

<span class="gtkdoc slc">// This is not really needed in this case since the pipelines are created and</span>
<span class="gtkdoc slc">// started at the same time. However, an application that dynamically</span>
<span class="gtkdoc slc">// generates pipelines must ensure that all the pipelines that will be</span>
<span class="gtkdoc slc">// connected together share the same base time.</span>
<span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#gst-element-set-base-time">gst_element_set_base_time</a></span> <span class="gtkdoc opt">(</span>pipe1<span class="gtkdoc opt">,</span> <span class="number">0</span><span class="gtkdoc opt">);</span>
<span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#gst-element-set-base-time">gst_element_set_base_time</a></span> <span class="gtkdoc opt">(</span>pipe2<span class="gtkdoc opt">,</span> <span class="number">0</span><span class="gtkdoc opt">);</span>

<span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#gst-element-set-state">gst_element_set_state</a></span> <span class="gtkdoc opt">(</span>pipe1<span class="gtkdoc opt">,</span> GST_STATE_PLAYING<span class="gtkdoc opt">);</span>
<span class="function"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#gst-element-set-state">gst_element_set_state</a></span> <span class="gtkdoc opt">(</span>pipe2<span class="gtkdoc opt">,</span> GST_STATE_PLAYING<span class="gtkdoc opt">);</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p></p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.173.8.5.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
            <a class="link" href="gst-plugins-bad-plugins-plugin-proxy.html#plugin-proxy">proxy</a>
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Sebastian Dröge &lt;sebastian@centricular.com&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Source</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.173.8.5.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>ANY</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-proxysrc.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-proxysrc.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstProxySrc-struct"></a><h3>struct GstProxySrc</h3>
<pre class="programlisting">struct GstProxySrc;</pre>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-proxysrc.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstProxySrc--proxysink"></a><h3>The <code class="literal">“proxysink”</code> property</h3>
<pre class="programlisting">  “proxysink”                <a class="link" href="gst-plugins-bad-plugins-proxysink.html#GstProxySink"><span class="type">GstProxySink</span></a> *</pre>
<p>Matching proxysink.</p>
<p>Flags: Read / Write</p>
</div>
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